This concern with being "impolite" towards Takaya is strange. We are all passionate fans of his work and have purchased it across several forms of media.
He hasn't published anything for years and has said nothing publicly about why. It's fully appropriate for long-term fans to contact Takaya, find out what he is doing, and establish if/when the manga will be published again (if ever).
If you have connections to Takaya then please get over yourself and use them already, and report back with any information you gather.