I live in KL. Multiple LHR-KL trips in a year, mostly in cattle class (Y). By all means, go for QRPC over Enrich. Enrich has never been valuable, the golden lounges can't compare to that of most other airlines (though I speak from limited Asian lounge experience), and redemptions have never been valuable either. You get very poor return for your loyalty to MH.
One thing to note is that if you want to fulfil the sector requirement for QRPC membership/renewal you'd almost definitely need to fly Asia-EU/similar long haul routes, and you're almost always going to be transiting in DOH. Very important to consider this as it will impact how easily you can retain status for.
Feel free to ask me anything if you'd like, I've been with Qatar for almost 3 years and am well satisfied with what they
Thank you very much for your answer! I did check the redemption tables from Qatar but was rather unpleasantly surprised to see the values are even worse than the Enrich rates, or did I totally misunderstand? How beneficial do you feel the Qatar program is in this regard?