With the action bar (properly implemented, so not just the first option on each item possible) you could take away some of the 'artificial difficulty' if you wanted to. Regardless, the problem with pre-EoC combat was never on the players side, it was that monsters did absolutely nothing - no abilities, no prayer, no summoning, no food, no potions, for the most part no damage. Auto-ss flashing (with or without deflects) would be perfectly acceptable imo, it still requires coordination (don't want your ss tick matching Graar's attack tick).
The only good PvM pre-EoC, design-wise, were things like tormented demons, glacors, Nex, dagannoth kings, maybe corp.
The problems with current pvm are (amongst others) the unbalanced xp and kill rates, the problems with tagging that very high killrates give you, the problems with cannon and familiars as well, the problem that it doesn't matter whatsoever what ability you use when, rotations are all fixed. Only at KK do you need to pay attention, and tanking Nex, and otherwise it's just a matter of not overkilling with Assault/Destroy. Equipment system is lousy too, so boring.
Getting 200k xp/h in a skill, one skill xp, should be the max. Skills like Firemaking, Cooking and Fletching are already considered the most easy afk/noob skills ever, combats are now part of that category, which really shouldn't even exist.
200k xp/h (including moneymaking, for buyables) should be the baseline, and of course some skills can be faster (Dungeoneering for one), and some will profit so they ought to be slower (high-level magic at glacors for example), and some are trained along with so many skills that they can be slower (hp, slayer, agility could be extended to that). But the 'cheap 500k xp/h' category is ridiculous. RS is based on long grinding, if you throw that away, you might as well buff all xp rates to the 500k xp/h mark.
Supporter of Zaros | Quest Cape owner since 22 may 2010 | No skills below 99 | Total level 2595 | Completionist Cape owner since 17th June 2013 | Suggestions
99 summoning (18th June 2011, previously untrimmed) | 99 farming (14th July 2011) | 99 prayer (8th September 2011) | 99 constitution (10th September 2011) | 99 dungeoneering (15th November 2011)
99 ranged (28th November 2011) | 99 attack, 99 defence, 99 strength (11th December 2011) | 99 slayer (18th December 2011) | 99 magic (22nd December 2011) | 99 construction (16th March 2012)
99 herblore (22nd March 2012) | 99 firemaking (26th March 2012) | 99 cooking (2nd July 2012) | 99 runecrafting (12th March 2012) | 99 crafting (26th August 2012) | 99 agility (19th November 2012)
99 woodcutting (22nd November 2012) | 99 fletching (31st December 2012) | 99 thieving (3rd January 2013) | 99 hunter (11th January 2013) | 99 mining (21st January 2013) | 99 fishing (21st January 2013)
99 smithing (21st January 2013) | 120 dungeoneering (17th June 2013) | 99 divination (24th November 2013)
Tormented demon drops: twenty effigies, nine pairs of claws, two dragon armour slices and one elite clue | Dagannoth king drops: two dragon hatchets, two elite clues, one archer ring and one warrior ring
Glacor drops: four pairs of ragefire boots, one pair of steadfast boots, six effigies, two hundred lots of Armadyl shards, three elite clues | Nex split: Torva boots | Kalphite King split: off-hand drygore mace
30/30 Shattered Heart statues completed | 16/16 Court Cases completed | 25/25 Choc Chimp Ices delivered | 500/500 Vyrewatch burned | 584/584 tasks completed | 4000/4000 chompies hunted