While you may have gotten used to the PSR drum sound, most listeners have NOT
I might suggest cuing up a real Beatles track, or whatever band you are shooting for, and A/B-ing between the two tracks as you go along. If, instead of playing with a machine, you played most nights with a real drummer, we wouldn't even be having this conversation!
Getting a good drum sound is definitely an art. And, I'm sorry, but I've heard better drum tracks even from PSR demos! The trick is knowing when it sounds right, rather than just 'what you are used to'...
Why not at least try to get a drummer involved with helping program the song..? Even if you can't afford to go in a studio and lay down live drums, a good drummer's input while you are programming can help enormously. They will definitely give you a reality check on the fills and groove structure.
I know the temptation is to do it all oneself, but even in the studio, there have only been a handful of über-talents like Stevie Wonder, Steve Winwood and Todd Rundgren that were capable of doing it 'solo'. If you have a good drummer as a friend (if you don't, you REALLY should get out more!), try bringing him in to listen to early versions. Might as well fix it as fast as possible...
Thanks for the kind words. I have never wanted people to 'mince words' about my music, say how you feel... it's the only way to improve, or at least not succumb to flattery. I'll keep telling it the way I see it (even if that ain't the way it is!), but be assured... it is NEVER personal.